Scaffolding bracket



May 16, 1944.

R. L. BROWN ET AL SCAFOLDING BRACKET Filed oet.' 19. 1942 INVENTORS Robei'` L. Brown Dewey R. Brown ATTORNEY `supporting the staging.

VA further object of' our invention is Patented May 16, 1944 'UNITED {,srarsss PATENT .OFFICE scAFForrlimcKEr andDewey R. Brown,

Portland, Oregz Application October 19, 1942, Serial No. 462,546

A v n V'sola-ms. `Our invention relates f-to scaifoldingused in construction work and has-particular application to scaffolding as used in constructing ships. It is necessary to provide scaiolding whenever a structure is #built which has-substantialheight "so that workmen can stand upon the `scaffolding to'raise thefadditionallcourses and to fasten kthem in place. In the construction of ships it -is common practice Ato 'formthe ribs thereof in `advanceof the-sheeting upon -theeXterior-of the hull Yand said ribs are relatively strong.

It `is common practice tomake-said ribs of `so-called A)ship channel which might'bev in the form of a ltrue channel'member or might lbe 4in the `form Vof Yan angle member.

- able-scaffolding can be constructed `to engage said rib members and can-be moved from place to place Iwithout requiring Ythe construction of Ascaffolding leading -down to some foundation. In

other words we'rutilizethe ribsof Athe ship itself asthe .verticalsmemb'ers f or supporting ther scaffolding and releasably secure `arms thereto fo -A further and more specic objectuof lour inlvention--is torprovide` scaffolding Voftthis character which may bev adjusted angularly with respect to the vertical members, such las lsaid ribs, so that the staging will be arranged level and truly horizontal even though the ribsextend obliquely to a verticalplane.

to pro-` vide arm members in scaffolding supports which are simple, strong, Isecure and which may be made either left or right hand depending upon the position thereof. The lateral webs of the ship channels arefc'ommonly made of tapered sec. tion-s and we form a pocket upon afastening platesecured-.to one end. Said pocket is tapered at a complementary. `angle so as lto. receive said lateral flanges. A bolt-or. other fastening means -is provided'for'for'c-ing the lateral iiange into said pocket and the-angle of said flange vvand said pocket tends =topromote a tight `and secure grip independent ci wear of the parts or slight irregularities or scale V-tlfier-eon. Said pocket is formedtso as to have two jaw members spacedv apart at opposite sides ci vthe pocket and one of the -jawmembers lisformed with two spaced V"relatively sharp edges. -`Saidjaw thus tends to bite into the lateral 'flange of rigirevert@slippage thereon;

therib so ast (Cl. S04- 14) Further and other details of our invention are hereinafter more fully described with reference to the accompanying drawing, in which:

Fig. l is a perspective view oi scaiolding ein- .5 bodying our invention shown attached to a fragymentary portion of the hull of a ship, said scaffolding vbeing shown secured to the ship channels thereof, parts being shown broken away to disclose details .of our invention which would K10 -otherwise be concealed;

Fig. 2 is a Vplan View, partly in section, taken on the line 2'-2 in Fig. 4;

Fig. 3 is a side elevationof one of the arms f-embodying our invention taken substantially on l'lfthe line 3-3 in Fig. 1, and

lFig. 4 is a fragmentary sectional view `taken -on the line 4--4 inFig. 3 with some parts thereof shown in section.

Our invention-is adapted to be used generally '20 vin construction work in which vertical structural members are used having lateral flanges and to which members, wal1s,.plates or other parts are Ato -be secured. Our invention has particular application to ship building and it is in connec- 25 tion Vwith such use .that our invention is illustrated, but it is to be understood that we do not deem our invention limited to such specific use. In the construction of a ship vertically extend: Aing ship channels I are provided and to such `gg'ch'arinels' plates 2 are-secured and `it is com- `mon at the prese-nt time to `secure said plates -lto the channels by welding and the shading -in the Adrawing is `yintended to indicate welding,

-such yasiat l3.

Each of such ship channels is provided with a laterally extending flange la. It is common practice to extend said iianges all in one direction, as is shown in Fig. l, but inasmuch as the 4scaiTold arms embodying our invention are .,40 symmetrical about a longitudinal axis saidarms may vbe reversed without requiring structural change. Said arms may also be used at -either .side of a ship, that is `they may be either leit hand :orright hand members merely by turning 434:5 them over. Said arms 4 are the principal members. supporting the staging and embodying our invention. `Flanking or staging 5 is supported by Ysaid -armsv and rests upon the upper surface thereof.V

The.. two arms are interchangeable, as has beenpointed out, and thus but one of such :arms will bedescribed and similar reference nu- 'merals will be given to the similar parts thereof. Each of said arms comprises an elongated .255 member 6 to one end of which a `securingplate I is pivotally mounted. The pivotal connection is made through a bolt 8 and a locking stud 9 extends through an arcuate slot Ill in said plate and is spaced a substantial distance from the bolt 8. Said arcuate slot is scribed about a radius Whose center lies at the center of the bolt 8. The locking bolt is provided with a washer 9a and is threaded into a boss II on the elongated member 6. When the locking bolt is seated tightly in place pivotal movement between the plate I and the member B is prevented.

We also provide two opposed set screws I2-I2a threaded in lugs I3-I3a. The points of said screws engage the opposite sides of the elongated member G and constitute auxiliary meansv for preventing pivotal movement between said plate and said elongated member. As is illustrated in Fig. 3 the ship channels or other vertical'meinbers may be inclined obliquely to a vertical plane and it is necessary that the arms be pivotally mounted so that the planking or staging may be arranged level and on a horizontal plane. At the free end of each of said arms 4 we provide a stake pocket ld adapted to receive a vertical member I5 for guard rail I6.

The securing plate is adapted to lie in a vertical plane and carries an angular jaw member II. Said jaw member preferably is made of a section of material substantially identical to the ship channel or other vertical member to which the scaffolding is to be attached. The lateral flanges of the ship channel and of the jaw member are tapered and said two tapers complement each other. Spaced from the inner face of said jaw member is a second jaw member I8. Said second jaw member preferably has two relatively sharp edges I8a whichv tend to bite into the back of the lateral'fiange- Ia so as to prevent slippage. shown as being. constructed of a section of angle iron and is secured by a web `I9 to the angular jaw member Il.. The pivot bolt 8 extends within the two legs of the two jaws members and preferably a spacer 2i] is secured to the two legs of said angular members andthe bore thereof ts more or less snugly about the pivot bolt 8 but permits relatively free movement of said bolt within said bore. n Y

Said bolt is provided with a washer 2l of relatively large diameter which is adapted to span the two legs of the second jaw member I8 and to overlie the back of the ship channeLin the manner shown in Fig. 4. A nut 22 is secured to the threaded shank of the pivot bolt B and when said nut istightened in place it tends to.

force the lateral'flange la, into the pocket 23 formed between opposed faces of the jawmembers l'I and it. We preferably provide one or more set screws 24 in the angular jaw member I1 to engage the flange Ia of the ship channel so as to prevent inadvertent slippage. The edges I8a of the second jaw member I8 tend to bite into the back of the flange Ia and said parts tend to bind to prevent slippage. The taper ofthe lateral flange of the ship channel and of the jaw also tend to produce a secure seat to prevent slippage and thevbolt 8 tends tohold such parts in tight engagement. All of said parts supplement each other and insure against slippage or release of engagement of the parts. The overlap of the washer 2i upon the back'of the ship channel I as well as the engagement of the set screws 24 tend to prevent the arm from being released iaterauy from the ship channel.

1. Scaffolding adapted to be detachably secured to a structure having vertically extending structural members, comprising a pair of laterally projecting arms adapted to be clamped to said structural members, each of said arms comprising an elongated member and a securing plate secured to one end thereof, means for holding a guard at the opposite end thereof, each of said securing plates having a vertically extending jaw adapted to be locked to a vertical structural member.

2. Scaffolding adapted to be detachably secured to a structure having vertically extending structural members, comprising a pair of laterally projecting arms adapted to be clamped to said structural members, each of said arms comprising an elongated member and a securing plate secured to one end thereof; means for holding a guard at the opposite end thereof, and each of vsaid securing plates having a vertically extendjaw members extending obliquely to a horizontal Said second jaw member is' plane and adapted .to be locked to a vertical structuralmember. f Y. .a l,

4; In scaffolding adapted to be detachably secured to a structure having laterally projeCting structural members provided witha lateral flange of tapered section, a laterally projecting arm comprising a securing plate `and an elongated membersecured to one end thereof, said securing plate `comprising a pair of Aclampingjawsdening a pocket between the opposed facesthereof, and one of said jaw faces being tapered to complementY the taper of thelateraldlangagof said structural member. said :pocket being proportioned to receive saidilange quite tightly.

In scaffolding adapted. to be detachablyqspesaid pocket. 6. Iniscaffolding adapted tol be detachablyfsecuredto va structure having laterally projecting structural members, a laterally projectingr arm comprising: a securing plate and,an elongated J member secured to one end thereof, said securflange tightly into said pocket.

ing plate comprising a pair of clamping, jawsLrdening a pocket between the opposed faces thereof, and a threadedclamping screw Yadapted ,to engage said structural member andA to force the l7. In scaffoldineadaptedto be detellablv. .S- cured to a structure having laterally projecting structural members; a laterally projecting arm v,comprising a. seouringplate and an elongated 1 member secured to one lend thereof, said'securing plate comprisinga .pair of clampingj'aws defining a pocket between the opposed-,faces thereof, one of said jaw faces defining two relatively sharp edges extending transversely of said pocket.

8. In scaffolding adapted to be detachably secured to a structure having laterally projecting structural members provided with a lateral ange of tapered section, a laterally projecting arm comprising a securing plate and an elongated member secured to one end thereof, said securing plate comprising a pair of clamping jaws defining a pocket between the opposed faces thereof, one of said jaw faces being tapered to complement the taper of the lateral flange of said structural member, said pocket being proportioned to receive said ange quite tightly, means adapted to engage said structural member and to force the flange tightly into said pocket, the other of said jaw faces defining two relatively sharp edges extending transversely of said pocket, said means lying intermediate said edges.

9. In scaffolding adapted to be detachably secured to a structure having laterally projecting structural members provided with a lateral ange of tapered section, a laterally projecting arm comprising a securing plate and an elongated member pivotally secured to one end thereof, said securing plate comprising a pair of clamping jaws defining a pocket between the opposed faces thereof, one of said jaw faces being tapered to complement the taper of the lateral flange of said structural member, said pocket being proportioned to receive said flange quite tightly, a. threaded clamping screw adapted to engage said structural member and to force the flange tightly into said pocket, the other of said jaw faces defining two relatively sharp edges extending transversely of said pocket, and said clamping screw lying intermediate said edges.

ROBERT L. BROWN. DEWEY R. BROWN. 

